利用PBFunc在Powerbuilder中支付寶當面付功能

在PB實現支付寶當面付的功能，需要先在支付寶進行商戶簽約，並設置相關的公鑰信息（具體參考支付寶文檔）。

然後使用對應的私鑰文件對參數進RSAWithSha1前面計算。具體代碼如下：

string ls_pubFileName,ls_priFileName
n_pbfunc_cryp lnv_cryp
ls_priFileName ="D:\pbfunclib_pri.pem"//私鑰文件
string ls_str

string ls_appId,ls_secret,ls_biz_content
ls_appId ="3434343"//改成你的appid
ls_biz_content='{"out_trade_no": "2015020011","scene": "bar_code","auth_code": "'+sle_1.Text+'","subject": "當面付條碼支付","total_amount": "0.01"}'

ls_str ="app_id="+ls_appId
ls_str +='&biz_content='+ls_biz_content
ls_str +='&charset=utf-8'
ls_str +='&method=alipay.trade.pay'
ls_str +='&sign_type=RSA'
ls_str +='&timestamp=2016-05-08 11:27:15'
ls_str +='&version=1.0'
string ls_sigStr
blob utf8R
utf8R =lnv_cryp.of_str2utf8(ls_str)
if lnv_cryp.of_sha1withRsa(ls_priFileName,utf8R,lnv_cryp.HASH_RESULT_DEFAULT,ls_sigStr) then
	MessageBox("提示","簽名成功："+ls_sigStr)
Else
	MessageBox("提示","簽名失敗")
end if

/*驗證簽名可以不需要調用*/
ls_pubFileName ="D:\pbfunclib_pub.pem"//在D盤生成公鑰文件pbfunclib_pub.pem
IF Not lnv_cryp.of_RSAVerifyFileSHA1(ls_pubFileName,utf8R,ls_sigStr,lnv_cryp.HASH_RESULT_DEFAULT) Then
	MessageBox("提示","驗證簽名失敗")
else
	messagebox("","驗證簽名成功")
End IF
//ls_str +=''
n_pbfunc_http lnv_http
lnv_http.of_clear()//清空參數
string ls_data
ls_data  = "app_id="+wf_alipay_urlencode(ls_appId)
ls_data += "&biz_content="+wf_alipay_urlencode(ls_biz_content)
ls_data += "&charset="+wf_alipay_urlencode("utf-8")
ls_data += "&method="+wf_alipay_urlencode("alipay.trade.pay")
ls_data += "&sign_type="+wf_alipay_urlencode("RSA")
ls_data += "&sign="+wf_alipay_urlencode(ls_sigStr)
ls_data += "&timestamp="+wf_alipay_urlencode("2016-05-08 11:27:15")
ls_data += "&version="+wf_alipay_urlencode("1.0")
lnv_http.of_set_URL("https://openapi.alipay.com/gateway.do?"+ls_data)
Blob lblb_data
string ls_error
IF lnv_http.of_post(lblb_data,ls_error) Then
    string gbkData
    gbkData = lnv_cryp.of_utf8ToGbk(lblb_data)//由於返回來的是utf-8編碼，直接顯示會亂碼
    MessageBox("提示",gbkData+" "+string(lblb_data))
Else
    MessageBox("提示","執行失敗")
End IF

　　其中wf_alipay_urlencode函數代碼如下：

//ls_str為參數

n_pbfunc_encode  lnv_encode
string ls_content,ls_reserved//指明不需要編碼的字元
ls_reserved =""//都需要編碼
string ls_sigStr
blob utf8R
utf8R =lnv_encode.of_str2utf8(ls_str)
lnv_encode.of_URIEncode2(utf8R,ls_content)
return ls_content

　　demo代碼詳見w_rsa窗體的SHA1WithRSA按鈕下載地址：

http://download.csdn.net/detail/my_aa/9644084